FreeCalypso > hg > freecalypso-tools
view target-utils/libbase/serio.S @ 752:c79aaed75bd8
compile-fc-batt: allow possible third field in source lines
Battery tables maintained in the fc-battery-conf repository will now
have a third field added, defining thresholds for the battery bars icon,
and there will be a new utility to compile them into the new
/etc/batterytab2 file read by the FC Tourmaline version of our
FCHG driver. For backward compatibility with the original Magnetite
version of FCHG, compile-fc-batt remains the tool for compiling the
original /etc/batterytab file format, and it needs to ignore the
newly added third field in battery table sources.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Thu, 05 Nov 2020 20:37:55 +0000 |
| parents | da6df2c626cf |
| children |
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#include "ns16550.h" @ this module implements the elementary serial I/O operations .comm uart_base,4,4 .text .code 32 .global serial_out serial_out: ldr r1, =uart_base ldr r2, [r1] 1: ldrb r3, [r2, #0x11] @ Calypso UART non-std register SSR tst r3, #0x01 @ Tx FIFO full flag bne 1b strb r0, [r2, #NS16550_THR] bx lr .global serial_in_poll serial_in_poll: ldr r1, =uart_base ldr r2, [r1] ldrb r3, [r2, #NS16550_LSR] tst r3, #NS16550_LSR_DR ldrneb r0, [r2, #NS16550_RBR] mvneq r0, #0 bx lr .global serial_flush serial_flush: ldr r1, =uart_base ldr r2, [r1] 1: ldrb r3, [r2, #NS16550_LSR] tst r3, #NS16550_LSR_TEMP beq 1b bx lr